Seismic design of hybrid unbonded post-tensioned precast concrete joints based on bearing capacity and energy dissipation capacity
- 29 December 2020
- journal article
- research article
- Published by SAGE Publications in Advances in Structural Engineering
- Vol. 24 (8), 1724-1738
- https://doi.org/10.1177/1369433220982733
Abstract
This paper provides a practical design method for hybrid unbonded post-tensioned precast concrete joints. Such joints featured with self-centering capacities have been widely favored in recent years. However, the absence of design methods hinders their further promotion. To solve the issue, two methods for calculating mechanical behavior of the joints were first studied: characteristic points method and iterative method. The effectiveness of the methods was verified by the existing test results. On this basis, a joint design method considering both yield bearing capacity and energy dissipation capacity was proposed. Moreover, to facilitate design, some factors affecting the bearing capacity were discussed. A five-story frame structure was designed by the proposed design method, and the influence of two design factors on structural response was analyzed by utilizing nonlinear time-history method. The analysis results show that: with the increase of energy dissipation factor αs, the post-earthquake residual deformation of the structure tends to increase linearly, while the accumulated damage of the structure will decrease continuously; both overdesign and underdesign of bearing capacity of the joint are unfavorable; and near-field earthquake may cause irreparable damage to structural columns, making the residual deformation of structures contrary to the self-centering capacity of joints, which shall be considered during engineering design.Keywords
Funding Information
- National Key Research and Development Program of China (2017YFC0703600)
- Six Talent Peaks Project in Jiangsu Province (JY-022)
- National Natural Science Foundation of China (51678301, 51678302 and 51808291)
This publication has 40 references indexed in Scilit:
- The Emilia Earthquake: Seismic Performance of Precast Reinforced Concrete BuildingsEarthquake Spectra, 2014
- Experimental and numerical study of a self‐centering prestressed concrete moment resisting frame connection with bolted web friction devicesEarthquake Engineering & Structural Dynamics, 2013
- A Simplified Procedure for the Seismic Design of Hybrid Connections in Precast Concrete StructuresThe Open Construction & Building Technology Journal, 2013
- Modeling cyclic loading behavior of jointed precast concrete connections including effects of friction, tendon yielding and dampersEarthquake Engineering & Structural Dynamics, 2012
- Experimental Evaluation of Posttensioned Precast Concrete Coupling BeamsJournal of Structural Engineering, 2010
- Seismic Design of Friction-Damped Precast Concrete Frame StructuresJournal of Structural Engineering, 2007
- Performance-Based Seismic Evaluation of Two Five-Story Precast Concrete Hybrid Frame BuildingsJournal of Structural Engineering, 2007
- Emerging Solutions for High Seismic Performance of Precast/Prestressed Concrete BuildingsJournal of Advanced Concrete Technology, 2005
- A Framework to Quantitatively Assess and Enhance the Seismic Resilience of CommunitiesEarthquake Spectra, 2003
- ANALYTICAL MODELLING OF THE SEISMIC BEHAVIOUR OF PRECAST CONCRETE FRAMES DESIGNED WITH DUCTILE CONNECTIONSJournal of Earthquake Engineering, 2001